Today commenter Appreciative Reader clued me in to a video by physicist Sabine Hossenfelder about whether the past still exists. This is a fascinating topic that I wrote about recently since I'm reading Hossenfelder's book, Existential Physics.
Here's what Appreciative Reader had to say about the video, along with the video.
Just watched this Youtube video of Sabine Hossenfelder speaking about just this topic, about how and whether the past might exist per theoretical physics. (Link: https://www.youtube.com/watch?v=GwzN5YwMzv0.) Short enough video, around 15 minutes. She speaks very well, and explains all of these complex concepts and ideas in an extremely clear and layman-friendly, jargon-free (and largely math-free) talk. Disclaimer, though: There's a commercial hook there, a two-minute or so plug at the end of the presentation for some course she's part of. But it isn't in the least obtrusive -- sitting as it does at the very end of the video -- and does not detract, in the least, from the rest of this excellent aimed-at-the-layman presentation. Apparently she’s got a few more videos out there, that can be explored with this one as the starting point. I’m looking forward to checking them out as well.